drivers/net/dgrs_bcomm.h

   1 /*
   2  * The bios low-memory structure
   3  *
   4  * Some of the variables in here can be used to set parameters that
   5  * are stored in NVRAM and will retain their old values the next time
   6  * the card is brought up.  To use the values stored in NVRAM, the
   7  * parameter should be set to "all ones".  This tells the firmware to
   8  * use the NVRAM value or a suitable default.  The value that is used
   9  * will be stored back into this structure by the firmware.  If the
  10  * value of the variable is not "all ones", then that value will be
  11  * used and will be stored into NVRAM if it isn't already there.
  12  * The variables this applies to are the following:
  13  *      Variable        Set to:         Gets default of:
  14  *      bc_hashexpire   -1              300     (5 minutes)
  15  *      bc_spantree     -1              1       (spanning tree on)
  16  *      bc_ipaddr       FF:FF:FF:FF     0       (no SNMP IP address)
  17  *      bc_ipxnet       FF:FF:FF:FF     0       (no SNMP IPX net)
  18  *      bc_iptrap       FF:FF:FF:FF     0       (no SNMP IP trap address)
  19  *
  20  * Some variables MUST have their value set after the firmware
  21  * is loaded onto the board, but before the processor is released.
  22  * These are:
  23  *      bc_host         0 means no host "port", run as standalone switch.
  24  *                      1 means run as a switch, with a host port. (normal)
  25  *                      2 means run as multiple NICs, not as a switch.
  26  *                      -1 means run in diagnostics mode.
  27  *      bc_nowait
  28  *      bc_hostarea_len
  29  *      bc_filter_len
  30  *
  31  */
  32 BEGIN_STRUCT(bios_comm)
  33         S4(ulong, bc_intflag)   /* Count of all interrupts */
  34         S4(ulong, bc_lbolt)     /* Count of timer interrupts */
  35         S4(ulong, bc_maincnt)   /* Count of main loops */
  36         S4(ulong, bc_hashcnt)   /* Count of entries in hash table */
  37         S4A(ulong, bc_cnt, 8)   /* Misc counters, for debugging */
  38         S4A(ulong, bc_flag, 8)  /* Misc flags, for debugging */
  39         S4(ulong, bc_memsize)   /* Size of memory */
  40         S4(ulong, bc_dcache)    /* Size of working dcache */
  41         S4(ulong, bc_icache)    /* Size of working icache */
  42         S4(long, bc_status)     /* Firmware status */
  43         S1A(char, bc_file, 8)   /* File name of assertion failure */
  44         S4(ulong, bc_line)      /* Line # of assertion failure */
  45         S4(uchar *, bc_ramstart)
  46         S4(uchar *, bc_ramend)
  47         S4(uchar *, bc_heapstart) /* Start of heap (end of loaded memory) */
  48         S4(uchar *, bc_heapend) /* End of heap */
  49
  50         /* Configurable Parameters */
  51         S4(long, bc_host)       /* 1=Host Port, 0=No Host Port, -1=Test Mode */
  52         S4(long, bc_nowait)     /* Don't wait for 2host circ buffer to empty*/
  53         S4(long, bc_150ohm)     /* 0 == 100 ohm UTP, 1 == 150 ohm STP */
  54         S4(long, bc_squelch)    /* 0 == normal squelch, 1 == reduced squelch */
  55         S4(ulong, bc_hashexpire) /* Expiry time in seconds for hash table */
  56         S4(long, bc_spantree)   /* 1 == enable IEEE spanning tree */
  57
  58         S2A(ushort, bc_eaddr, 3) /* New ether address */
  59         S2(ushort, bc_dummy1)   /* padding for DOS compilers */
  60
  61         /* Various debugging aids */
  62         S4(long, bc_debug)      /* Debugging is turned on */
  63         S4(long, bc_spew)       /* Spew data on port 4 for bs_spew seconds */
  64         S4(long, bc_spewlen)    /* Length of spewed data packets */
  65         S4(long, bc_maxrfd)     /* If != 0, max number of RFD's to allocate */
  66         S4(long, bc_maxrbd)     /* If != 0, max number of RBD's to allocate */
  67
  68         /* Circular buffers for messages to/from host */
  69         S4(ulong, bc_2host_head)
  70         S4(ulong, bc_2host_tail)
  71         S4(ulong, bc_2host_mask)
  72         S1A(char, bc_2host, 0x200)      /* Circ buff to host */
  73
  74         S4(ulong, bc_2idt_head)
  75         S4(ulong, bc_2idt_tail)
  76         S4(ulong, bc_2idt_mask)
  77         S1A(char, bc_2idt, 0x200)       /* Circ buff to idt */
  78
  79         /* Pointers to structures for driver access */
  80         S4(uchar *, bc_port)    /* pointer to Port[] structures */
  81         S4(long, bc_nports)     /* Number of ports */
  82         S4(long, bc_portlen)    /* sizeof(PORT) */
  83         S4(uchar *, bc_hash)    /* Pointer to hash table */
  84         S4(long, bc_hashlen)    /* sizeof(Table) */
  85
  86         /* SNMP agent addresses */
  87         S1A(uchar, bc_ipaddr, 4) /* IP address for SNMP */
  88         S1A(uchar, bc_ipxnet, 4) /* IPX net address for SNMP */
  89
  90         S4(long, bc_nohostintr) /* Do not cause periodic host interrupts */
  91
  92         S4(uchar *, bc_dmaaddr) /* Physical addr of host DMA buf for diags */
  93         S4(ulong, bc_dmalen)    /* Length of DMA buffer 0..2048 */
  94
  95         /*
  96          *      Board memory allocated on startup for use by host, usually
  97          *      for the purposes of creating DMA chain descriptors.  The
  98          *      "len" must be set before the processor is released.  The
  99          *      address of the area is returned in bc_hostarea.  The area
 100          *      is guaranteed to be aligned on a 16 byte boundary.
 101          */
 102         S4(ulong, bc_hostarea_len)      /* RW: Number of bytes to allocate */
 103         S4(uchar *, bc_hostarea)        /* RO: Address of allocated memory */
 104
 105         /*
 106          *      Variables for communicating filters into the board
 107          */
 108         S4(ulong *, bc_filter_area)     /* RO: Space to put filter into */
 109         S4(ulong, bc_filter_area_len)   /* RO: Length of area, in bytes */
 110         S4(long, bc_filter_cmd)         /* RW: Filter command, see below */
 111         S4(ulong, bc_filter_len)        /* RW: Actual length of filter */
 112         S4(ulong, bc_filter_port)       /* RW: Port # for filter 0..6 */
 113         S4(ulong, bc_filter_num)        /* RW: Filter #, 0=input, 1=output */
 114
 115         /* more SNMP agent addresses */
 116         S1A(uchar, bc_iptrap, 4) /* IP address for SNMP */
 117
 118         S4A(long, bc_spare, 2)  /* spares */
 119 END_STRUCT(bios_comm)
 120
 121 #define bc      VMO(struct bios_comm, 0xa3000100)
 122
 123 /*
 124  *      bc_status values
 125  */
 126 #define BC_INIT 0
 127 #define BC_RUN  100
 128
 129 /*
 130  *      bc_host values
 131  */
 132 #define BC_DIAGS        -1
 133 #define BC_SASWITCH     0
 134 #define BC_SWITCH       1
 135 #define BC_MULTINIC     2
 136
 137 /*
 138  *      Values for spew (debugging)
 139  */
 140 #define BC_SPEW_ENABLE  0x80000000
 141
 142 /*
 143  *      filter commands
 144  */
 145 #define BC_FILTER_ERR   -1
 146 #define BC_FILTER_OK    0
 147 #define BC_FILTER_SET   1
 148 #define BC_FILTER_CLR   2